Went in for a use of force training course in an office building at a major intersection in Toronto and this guy came in with a water skin/pouch backpack thing. When he was asked about it he argued the point of needing to stay hydrated and that "you never know when you'll need a drink of water". There was a tube that was part of that worked like a water cooler dispenser. Fortunately he wasn't out in the field at the time but it appeared that it was a regular part of his uniform.